Type-writing machine.



$1M, MANN. m wmrme MACHINE. APPLICATION FILE-D Arm-1e. 191s.

Patented Aug. 24,1915.

4 SHEETS-SHEET i.

ATTORNEYS SI Ml TYPE WRITING MACHINE.

' Patented Aug. 24, 1915:

a m e 1 m P A D E L n 0 U A m L P P A Q 3 9 4 l 1 5 1 B/ 1 4 SHEETS S,HEET 3.

WITNESSES.- g" 'mvzlvron 7 61.21; Jmnn/ f0ia4gfifakwp i S-M. MANN.

TYPE WRITING MACHINE.

APPLICATION FILED APR. I6, 1915.

Patented Aug. 24, 1915.

191519498 4 SHEETS-SHEET4 Q a Q 5% 2% m m I 'INVENTOR J. M. mafia,

Amnmf s k'roiinections controlled by the carriage re UNITED STATES PATENT FEM?) TYPE-WRITING MACHINE.

Application filed April 16, 1915.

To (1/! w/m-m 17/ may concern.

.lle it known that l, SvLvANus M. Mann, a citizen of the United States, and a resident of UI'eenvilIe, in the county of Monroe and State of West Virginimhave invented a. certain new and useful Improvement in Type- Writing Machines, of which the following is a specification.

My present invention relates generally to typewriting machines, and more particularly to typewriting machines including variable spacing means, my object being to provide means whereby three dilferent spacings may be accomplished, one of which is equal to the ordinary spacing between letters. aml the other two of which are respectively one-half of the usual spacing and one and one-half times the usual spacing.

A further object of my invention is to accomplish the above by a novel and simple arrangement of parts, bringing about a minimum change in the arrangen'ient and. operation of the parts of certain standard typewritii'ig machines.

A still further object ofmy invention is to accom )lish the above variable s )acin s b means of two escapement shafts, together with means whereby they may be either independently operated or operated in unison, one of the escapement shafts controlling the full and usual spacing and the other controlling the half spacing.

A further object of my invention is to provide in connection with the above means, other means actuated by'the setting of the shift lock whereby capitals will be spaced one and one half times the usual spacing in typewriters. v

A still further object of my invention is to provide certain simple andincxpensivc lease key whereby to Withdraw the controlling pawl of one of the esaipements and thus permit the carriage to be moved freely in either direction.

' These objects, and the advantages resulting from my invention, will be better understood by reference to the following description in which the several partsare described particularly in connection with the accom- 'ianyin'g drawings, forming a part of this specilication,- and in which-s Figure 1 is a vertical longitudinal section through 'a typewriting machine, embodying my invention. Fig. 2 is, a vertical cross sec- Specification of Letters Patent.

Patented Aug. 24, 1915.

Serial No. 21,864.

tion thcrethrough taken substantially on the line 22 of Fig. l, with one of the keys depressed. Fig. 3 is a detail'cross section taken therethrough substantially on line 3+3 of Fig. 2, with one of the keys clepressed. Fig. 4 is a plan view of the parts shown in Fig. 3. Fig. 5 is a detail section taken therethrough substantially on line 55 of Fig. 2-. Fig. (3 is a diagrammatical section taken therethrough substantially on line 6-45 of Fig. 2. Figs. 7 and 8 are detail vertical sections, taken respectively on. line 77 of Fig. 5 and line 8-8 of Fig. (3, through the escapement mechanism controlling full spaces. Fig. 9 is a detail perspective view of a part of the carriage scale, and. the front indicator, indicating the normal advancement of the carriage under full-spacing. Fig. 10- is a diagrammatical perspective view illustrating the two escapement controlling bars and a single key lever capa- 'ble of simultaneously moving both of these bars. Fig. 1.1 is a detail vertical cross section taken through the lower part of the machine, substantially on line li -11 of Fig. .1; "Fig- 12 is a View similar to a portion of Fig. 11, illustrating the two escape; inc-tart controlling bars, shifted lengthwise by the setting of the shift lock. Fig. 13 is a perspective view illustrating similar parts shown in Fig. 9, in this instance moving under control of the half spacing, and'Fig. 14 is a detail perspective view illustrating the ction of the carriage releasing parts.

Referring now to the d ii-wings, it will be plainly seen from l igs. 2, 3, and 4: in pal ticular, that the usual carriage control shaft A which is journaled centrally of the upper rear portion of the frame 13 of the machine and is provided at its inner end with a pinion A' below and in engagement with the rack B at the rear of the movable carriage B, is, in accordance with my invention, provided at its outer rear end with, a bevel. gear A in mesh with the. largegear, also beveled, of a. difierential (,1, connecting the inner contiguous ends of the two escapement shafts I) and E which my invention provides.

The eseapement shafts D and E are mounted in axial alinement through bearings l of a rearwa-rdly projecting U-shaped support F, the forward ends ofwhich are secured upon the upper rear portion of the frame B of the machine, as seen at 1, pari so ticula-rly in Fig. 4, upon relatively opposite sides of the main controlling shaft A, with wheels Dand E, the teeth of the es eape-\' ment wheel 1) being spaced apart in accordance wlth the spaclng of the teeth of the usual escapement wheel, whereby when actuated, to permit of a full ispaced shift of the carriagell ()n"'the4iotlie1 hand, as

will be best seen by compa'" on of the escapement wheels I) and E in Fig. 2, the teeth of the escapement wheel E. are spaced a distance of one half the spacmgof the teeth of escapement wheel DFwheg-eby when actuated to permit of but a half spaceshift of the car age B". This may be plainly inferred from Figs. 9 and l3, in the former figure of which the scale indicator B is at a full space mark of the carriage scale B",

while in Fig. 13, the indicator B is at a half space or a point halfway between the full space mark of the scale B, these results being respectively had by actuation of" the escapement wheels l) and E.

The actuation of escapement wheels I) and E is controlled by pawl carrying plates (lr and G, supported in upright position and laterally spaced relation, in needle bearings H at the relatively opposite rearward] y offset ends H of a bracket H secured to the central .lower portion of a depending U- shaped supporting frame I, the uppenends of the extensions of which 'are bent forwardly upon, and secured to,-the rear upper portions of the main frame B, as seen at I, particularly in Fig. 4, beyond the secured ends of the first mentioned U-shaped support F. The pawl carrying plates G and G which swing laterally upon their needle bearings H are connected by a retractile spring G controlling both of them and operating to normally hold the same in inoperative position, and each of these plates is provided with a stationary pawl G and a movable pawl G, the latter being controlled by a spring Gr as usual. Each of these plates Gr and G is also provided with a lat- -.erally projecting arm G, the arm of plate G being pivotally connected to the upper end of a vertically extending connectlng'rod G and the arm of plate G being similarly connected to the upper end of a connecting rod G Thus it will be seen that when the connecting rod (l 13 drawn downwardly and the contrr-lling plate G rocked on its.

' bearings thereby, the escapement Wheel G will be released a single notch, permitting a full space movement of the carriage B and it will likewise be seen that when the connecting rod G? is drawn downwardly, the contnolling -Qplate" G will be rocked on its bearings, releasing-the escapement wheel E 'i to effect a movement of the carriage'B through a space and a half.

The lower ends of the connecting rods G and G extend downwardly into the base of typewriter frame A, and are respectively connected at J and J by pivots to the forward ends of arms J and J these arms being respectively connected at their rear ends in a rigid manner to forward and rear transverse rock shafts J and J To the shaft J are rigidly connected the rear ends of a pair of spaced forwardly extending arms K, to the forward ends of which arms ape connected the end portions of atransixverse escapement controllingbar K and to the shaft J 5 are similarly connected the rear ends of forwardly extending arms K extending parallel with the arms K and supporting at their forward ends, the transverse escapement controlling bar K spacedforwardly. beyond, and extending parallel with, the bar K as best seen by reference to Figs. 3 and 10. Downward movement of the controlling bar K. thus rocks the shaft J, which, through the connecting rod G, actuates the escapement E, while downward movement of the controlling bar K rocks the shaft J which, through the connecting, rod G actuates the escapement E.

By reference to Figs. 1, 4, 10, and 11 in I particular, it' will be seen that the controlling bars K. and K extend transversely be-' low the series of key levers and that the bar K has vertical slots K in its upper edge which, inits normal position as shown in Fig. 11, are alined beneath, and adapted to receive, each ofthe key levers for the keys of the key board with the exception of the key lovers of the keys W, M, I and L, the blank spaces K beneath these particular key levers as plainly shown in Fig. 11, resulting in depression of the bar K when either of the key levers mentioned is depressed. On the other hand, the controlling bar K is provided with but two slots K which, as shown in Fig. 10, and also in dotted lines-in Fig. 11, are alined, in the normal position of this bar, below the key levers for the keys I and L alone. Thus, in the normalposition of the controlling bars K and K, the levers ll) and 11 of keys WV and M respectively, which are of abnormal size, will actuate or lower both of 'the'controlling bars while the levers 12 and 13 of the keys I and L respectively will, being movable in the slots K of the bar K, actuate the bar K alone. On the other hand, the levers 1 of the various other keys of the machine will, being movable into the slots K of the bar K actuate the bar K alone.

letters. W and M are written, the carriage spaced one and one-half the usual hile when the keys I and L are he carriage is spaced only one usual spacing,depression of all of ,t e otlier levers and keys of the typewriter sulting in the usual whole spacing. De-

'., ressi(, n ofthe usual shift keys, such as shown. at in Fig. 1, does not, in my invention aiiect the foregoing operation as far as thevariable spacing of the carriage is com-.crned, butwhen the shift lock lliis .,.de -)ressed, the capitals are all spaced one and one half times the usual spacing by the nieans to be now described.

As blast seen in Figs. 1, 11, and "12, the lever 17 of the shift lock 16 has an added part adjacent its, inner end, in the form of an arm 1) *er"2(),rocks the lever, throwing the'lm ril /of arm v22 to the right in Fig. whereby to shift the controlling bars l and 'jl ii longi tudinallyto the right, such, hifting" move nent being permitted through siiliicient flexibility of the carrying arms K'andKfiand resulting injmovement of the slot 1, and K -of thetwo controlling bars out of alinei nl'ant with the key levers sothat each of thekey levers when depressed engages both. of'the controllii'ig bars K and K, and upon depressing both of these controlling bars will. permit of a spacing movement of too carriage one and one half times that of theordinary full, space. ltlwill also best be seen. by reference to l igs. 11 and 12, that one of the lovers 2% of the spacing bar 25 is provided wit li a pair of side angle pieces 21') and ,27, thezangle piece 26 normally engaging and projecting'upon a depending laterally extended .arm 28 of the controlling bar K so that upon depression of the spacing bar 25, the controlling bar K will. be depressed permitting a full spacing movement of the carriage. It will also be seen, however,- that the controlling bar K is provided with a depending projection, or arm 2!) extending III a relatively opposite directir'm to the arni of bai-QK, and which, though no'rmally out-1' of enghgemept. with the angle piece 27 of the spacing bar lever .34 before mentioned, is movable beneath the The re sult is such that when the abnormally large same when the two controlling bars K and K are shifted longitudinallyto the right under control of the depression of the shift lock 16', so that when so positioned as shown in Fig. 12, depressionof the spacing bar 25, causes lowering movement of each of the controlling bars K andK whereby in this position of the parts, depression of the spacing bar 25 causes spacing of the carriage one and one half times the usual ful-l space thereof, to accord with the increased spacing 0 the capitals as before described,

Referring now to Figs. 2, hand 14, it will be seen that. the movable pawl G of the. plate (3r for actuation of the escapen'lent in Figs. 5 and 1 1, permitting its lengthwise .80 wheel (Ji', 1s provided with a slot {1, best seen movement away from the ratchet wheelor escapement G upon depression of a lever 30, pivoted at one end in a bracket 31: secured upon the upper rear portion of the type" writer frame, and having a downwardly I bent and resrwardly projecting rear end 32 tioned. Lever 30 is intermediately engaged engaging a 1.51133 of the pawl G" justmen-Q h by the upper hooked end 34 of a vertical link 35, the lower end of which is engagedbyone laterally projecting arm 36 of a lever 37 intermediately pivoted upon a pin 33% having its opposite end 39- projecting up right and provided with a roller 4.0 disposed beneath. the usual depressible carriage re lease rail 41 which is depressed as usual through connections 42 from the carriage re lease lever 43. Thus by releasing themovthe carriage may be freely moved in either direction as desired.

Thus from the foregoing construction and arrangement of parts, it will be 'seen'that I' provide simple and inexpensive means whereby to promote a variable spacing-of the -arriage, enabling the same to space the ordinary full space for letters of ordinary size, half spaces for letters of small. size, such as the letters I and L, and spaces of one and one halfthues the usual full space for letters of large sizesuch W and M. It will also be seen that I provide such a variable spacing operative as well when the shift keys are depressed, and simple means whereby the carria e is released a full space when the space bar is de )ressed. It will also be seen that I. provide simple and effective means whereby to space all capitals the maximum space of one and one half times the usual full space when the "shift lock is, depressed, not only when am of the keys are depressed, but as well'vvhen the space bar is de'pressed.- It will also be seen that in spite of the several added features I, have by simple and effective means, prov" led for the usual. release 'of the carriage foi movement in either direction, andhave accomplished the several advantagesincident and . able pawl (i of one of the escapement wheels,

to the foregoing construction and arrangement and operation of parts, without detracting in any way from the practical and successful operation of the other parts of the typewriter not mentioned. I claim 1. In a variable feed mechanism for type writers, the combination with a carriage control shaft, of a pair of escapement mechanisms consisting of horizontal laterally extending and axially alined escapement shafts, a differential connecting the inner adjacent ends of said shafts with the carriage control shaft, escapement wheels carried by the outer ends of said escapement shafts and having differently spaced teeth, a frame depending below the said escapement shaft, a pair of pawl carrying plates having bearings in the said frame, pawls carried escapement wheels, and key actuated means for controlling said escapement mechanisms simultaneously with, and independently of, one another.

2. In a variable feed mechanism for typewriters, the combination with a carriage control shaft, of a pair of escapement mechanisms consisting of horizontal laterally extending and axially alined escapement shafts, a differential connecting the inner adjacent-ends of said shafts with the carriage control shaft, escapement wheels carried by the outer ends of said escapement shafts and having differently spaced teeth, a frame depending below the said escapement shaft, a pair of pawl carrying plates having hearings in the said frame, pawls carried by the plates and engaging the respective cscapement wheels, key actuated means for controlling said escapement mechanisms simultaneously with, and independently of, one another, and means actuated by the shift lock of the typewriter whereby to prevent independent control of the said escapement mechanisms. I

3. In a variable feed mechanism for type writers, the combination of a pair of escapement mechanisms, a differential connecting said mechanisms together and with the carriage control shaft, transverse depressible controlling bars extending below the typewriter key levers and connected to the respective-escapement mechanisms, and adapted to be depressed atthe same time by depression of certain of the key levers, one of said controlling bars having slots into which certain other key levers are depressible, the other bar having slots into which still other key levers are depressible, means actuated by the shift lock for shifting the said controlling bars longitudinally to move their slots out of alinement with the key levers, one of said controlling bars having an arm constantly engaging one, of the space bar levers of'the typewriter, and the other con' by the plates and engaging the respective trolling bar having an arm movable to engage the said space bar leverwhen the controlling bars are shifted.

4. In a variable feed mechanism for type writers, the combination of apair of escapement mechanisms, a differential connecting said mechanisms together and with the carriage control. shaft, transverse depressible controlling bars extending in spaced parallel relation below the typewriter key levers, said bars being longitudinally shiftable and having connection with the respective escapement mechanism, one of said bars having slots into which certain of.the key levers are depressible, and the other bar having slots into which other key levers are depressible 'a lever having an arm adjacent one end 0 the said bar, and an arm secured to the shift lock lever and engaging said bar lever whereby to move the same against the controlling bars and shift the latter to move their slots out of alinement with the said key levers.

5. In a variable feed mechanism for typef writers, the combination of a pair of. escapement l'lleUllilIIlSlIlS, a differential connecting said mechanisms together and with the carriage control shaft, transverse depressible controlling bars extending in spaced parallel relation below the typewriter key. levers, said bars having connections with the respective escapement mechanisms permitting longitudinal shifting movement of the bars, and being adapted to be depressed at the same time by depression of certain of the key levers, one of said bars having slots into which certain other key levers are'rleln'essible, and the other bar having slots into which still other key levers are depressible, and means actuated by the shift lock lever of the typewriter whereby to shift the said controlling bars longitudinally to move their slots out of alinement with the said key levers, for the purpose described.

(5. In a variable feed mechanism for typewriters, the combination of a pair of escapement mechanisms, a differential connecting said mechanisms together and with the carriage control shaft, key actuated means for normally controlling said escapement mechanisms simultaneously, and independent of one another, and means actuated by the shift lock of the typewriter whereby to prevent independent control of the said escapement mechanisms.

7. In a 'ariable feed mechanism for typewriters, the combination with a carriage control shaft, of a gear secured upon the rear end of the said shaft, a pair of horizontal laterally extending and axiallyalined es capement shafts, adifferential connecting .Lspaeed teeth, a frame depending below the,

' the frame and having rearwardly'ofi'set end portions, :1 pair of pawl carrying plates having hearings in said offset bracket ends, and

in portions of said frame, a springconnectingthe said plates together and normally holding the same in inactive position, pawls carried by the plates and engaging the re spective escapement Wheels, and controlling means actuated by the typewriter keys and connected to the respective escapement mechanisms, whereby the latter may be independently and simultaneously controlled.

8. In a variable feed mechanism for typewriters, the combination, of a pair of hori zontal laterally extending and axially alined escapement shafts, a differential connecting the inner ends of said shafts with the car-' riage control shaft of the typewriter, escapement wheels carriedby the outer endsjof said escapement shafts, a.nd;having' difl'erently spaced teeth, laterally rocking pawl carrying members or plates having bearings below the respective escapement wheels, and having connections normally holding the same in inactive positions, pawls'carried-by the said plates and engagingthe escapement wheels, and key actuated controlling means 1 having connection with the respective pawl carrying plates, for the pnr ose described.

' SYLVAN S M. MANN.

-Witnesses:

R. H. ARNOTT, C. S. BALLA D. 

